Kevin struck as Fulham came from behind to win their third round tie 3-1.
Silva said afterwards: “He was looking for it. The way his teammates celebrated with him, the fans, it was very important for him. If you are an offensive player, you need these type of moments, to be decisive with assists or goals.
"Before in some games, he had good chances but didn't score. Last game against Chelsea, he had a very good moment as well - he didn't score. Even this game, before the goal he had a great shot when he cut in and unfortunately for him it didn't go in.
“It's important. What an assist from Harry Wilson, what a brilliant moment again. I hope that can help him to be confident in those last moments because we need him in the best confidence. The talent is there, it's just for us to keep trusting in the process with him to develop him.”